Untwisting device



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WILLIAM E. PUTNAM, 0F WESTON, MASSACHUQETTS.

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Application filed June a, 1922. Serial No. 565,414..

To all whom iii-a3, concern:

Be it known that I VVILLIAM E. PUTNAM a citizen of the United States of iilrmerica,

and resident of YVeston.

Middleseii and invented new Untwisting Devices is a specification.

This invention rel State in the county of of Massachusetts, have and useful Improvements in of which the following ates to untwisting devices particularly adapted for use on portable electrical instruments nstruments which have such as telephone a conductor cord carrying the electrical connections thereto; This cord has a tendency to become twisted thereby shortening the cord. interfering with the movementof the instrument. and

sometimes causing 111g wires. is in the nature of a or further adaptation of the lreakage of the conduct- The invention here n disclosed st i'ucture invent ve idea n alternative generically claimed in my copending appliherewith.

cation, Serial No. 5.65., ll

3, filed on even date One object of the invention is to provide a portable electrical instrument which when lifted will automatically its cord.

For

Fig.2;

rotate to untwist a complete disclosure of the invention reference w ll now be had to the drawings.

vational view;

Fig. 2 1s a rear el evational view;

3 is a sect on on the l ne 3-43. of

4 is a section on the line of Fig. 5 is an enlarged detail elevational viewof a modification; and

F1g. 1g. 0. v

The embodiment o for the purpose of 6 is a section Onthe line 6-6 of f the invention shown illustration compr ses a portable telephone instrument of usual form comprising; a mouth piece G, and

base A, standard 13., receiver D suspended from the standard B by the usual hook E.

A cord Fenters the the mouth piece and base A of the instruconnectlons to the receiver.

Since the cord F tends to become twisted during the use ofthe instrument suitable mechanism is provid ed for causing the instrument automatically to rotate to untwist the cord. This mechanism may take the form of a guide mein lar in form attached ber G preferably tubuto t a da d B of the instrument by suitable spring clamp ment with standard B and member screws 1. The guide member G is adapted to receive in telescopic relation there within a shaft J having spiral parallel grooves K extending longitudinally thereof and a handle L at its upper end. Means which may take the form of pins or lugs M fast in the upper end of guide member G enter grooves K as indicated in- Fig. i and cause members J and G to rotate relatively to each other to move into or out ef the guidemeinber G; h

From th s it follows that when handle L is utilized to lift the instrinnent'the threaded connection between parts J and G and the weight of the instrument causes the latter to rotate about shaft J as it'moves downwardly under the influence of the force of gravity, thus untwisting cord F. When the instrument is returned to'a support. shaft J on handle L returns by gravity to its tclescoped position withinguide member G or may be forced back pressing upon the top of the handle. i l

An extensive inspection of the cords to portable telephone lIlStIUIIlGHtS' discloses that the cords always twist in one direction so that one direction of rotation for such instruments is suflicient to untwist the cord. In certaincases, however, it may be desirable or "necessary to have the instrumentrotate in the opposite direction. For this purpose a modified apparatus is dis closed in Figs. 5 and G, in which spiral grooves N and N are disposed in one direction of rotation and grooves O and Q"in the other direction of rotation upon a shaft J, similar in all respects to shaft J.

To provide a convenient means for changing the direction o'frotation of the instru ment when elevated in the manner described guide member G in Figs. 5 and 6 has a spanner P of spring material fast thereto as by rivets Q, the free ends of the spanner member P being provided witlnthe lugs R and 13' the former shaped to fit grooves N and N and the latter shaped to fit grooves O and O. A button S having a shank S extends through slot T in guide member G and a similar slot in spanner member P and is headed over at S" against the spanner. By sliding a button S to the right as shown in Figs. 5 and 6 lug R which is when shaft J is caused out of contact with shaft J will be released when the button is above rivets Q to permit it to drop into slot N and as the button is moved farther it will retract lug R from the slot 0 so that the relative rotative movement of guide member G mounted to shaft J will be reversed from that shown in the drawings. The method of operating the modified structure is the same as that for operating the form first described.

I claim:

1. In combination, a portable electrical instrument having a cord making the electrical connections thereto. and means causing said instrument to rotate automatically when lifted vertically thereby.

2. In combination, a portable telephone instrument having a cord making the electrical connections thereto, a handle attached to said instrument, and means causing rotation of said instrument about a longitudinal aXis when the instrument is lifted vertically by said handle.

3. In combination, a portable telephone instrument having a cord making the electrical connections thereto. a handle attached to said instrument, and adjustable means causing rotation of said instrument about a longitudinal aXis in either direction when the instrument is lifted vertically by said handle.

4. In combination, a portable telephone instrument having a cord making the electrical connections thereto, a handle having a shaft attached thereto, and means connecting said handle through its shaft to said instrument and arranged to cause the latter to rotate substantially about said shaft. when the instrument is lifted vertically by said handle.

5. In combination, a portable telephone instrument having a cord making the electrical connections thereto, a handle having a spirally threaded shaft fast thereon. and means attached to said instrument and arranged to cooperate with said shaft to cause said instrument when lifted vertically by said handle to rotate around the shaft thereof.

6. In combination, a portable telephone instrument having a cord attached thereto, guide means on said instrument, an elongate member having a handle, and cooperating parts on said means and said member whereby said instrument is caused to rotate about the axis of said member when lifted vertically by said handle.

7. In combination, a portable telephone instrument having a cord attached thereto.

a guide member on said instrument. an elongate member adapted to telescope within said guide member, and cooperating parts of said members to cause said instrument to rotate about the axis of said members upon relative longitudinal movement thereof.

8. In combination, a portable telephone instrument having a cord attached thereto. a tubular guide member attached to said instrument, a handle having a spirally threaded shaft adapted to telescope within said member. and means on Said member engaging the spiral thread on said shaft whereby when said instrument is lifted vertically by said handle the former is caused by gravity to rotate about said shaft.

9. In combination, a portable telephone instrument having a cord attached thereto. a tubular guide member attached to said instrument, a handle having a spirally threaded shaft adapted to telescope within said member, and adjustable means on said member engaging the spiral threads on said shaft whereby when said instrument is lifted vertically by said handle the former is caused by gravity to rotate in either direction around said shaft.

10. In combination. an instrument having a cord attached thereto, a guide on the instrument, a handle telescoping with the guide and having a right and left hand spirally grooved portion. and means on the guide alternately engageable with the right hand or left hand groove to control the direction of rotation of the instrument when it is lifted vertically by the handle.

11. In combination. an instrument havin a cord attached thereto. a tubular guide member attached to the instrument. a handle having a shaft provided with right and left hand spiral grooves. and spring pressed members on the guide for engagement in the grooves, the guide having means for holding one of said members out of engagement with its groove.

12. In combination, an instrument having a cord attached thereto. a tubular guide member attached to the instrument. a handle having a shaft provided with right and left hand spiral grooves, and spring pressed members on the guide for engagement in the grooves, and a shiftable member on the guide adapted to be moved to hold one or the other of said members out of engagement with the shaft.

Signed by me at Boston, Mass, this 31st day of May 1922.

WILLIAM E. PUTNAM. 

